HOMEVULNERABILITIESCVE-2020-13656
CRITICAL

CVE-2020-13656

CWE-125Published: June 12, 2020· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

In Morgan Stanley Hobbes through 2020-05-21, the array implementation lacks bounds checking, allowing exploitation of an out-of-bounds (OOB) read/write vulnerability that leads to both local and remote code (via RPC) execution.

NVD Source

Technical Analysis

CVE-2020-13656 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

morganstanley1 product(s)
hobbes
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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Official Patches & Advisories

ADVISORYhttps://know.bishopfox.com/advisories/oob-to-rce-exploitation-of-the-hobbes-functional-interpreter
ADVISORYhttps://know.bishopfox.com/advisories/oob-to-rce-exploitation-of-the-hobbes-functional-interpreter

All References (2)

→
https://know.bishopfox.com/advisories/oob-to-rce-exploitation-of-the-hobbes-functional-interpreterExploit · Technical Description · Third Party Advisory
→
https://know.bishopfox.com/advisories/oob-to-rce-exploitation-of-the-hobbes-functional-interpreterExploit · Technical Description · Third Party Advisory

Quick Facts

CVE IDCVE-2020-13656
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-125
CISA KEVNo
Affected1 vendor(s)
PublishedJun 12, 2020

Related CVEs (CWE-125)

CVE-2017-14451
10.0
CVE-2009-2523
10.0
CVE-2013-0767
10.0
CVE-2021-21777
10.0
CVE-2021-41556
10.0
CVE-2026-24826
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-13656 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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